Aluminum Alloy Limited Rings Installation Assist Tool Multifunctional Drill Depth Stop Collar Clamping Device Positioner Woodworking Tool

Features:
Easy to operate and use, high accuracy, has a long service life.
Magnet is placed on the upper apex to refrain the stop collar from shifting.
Drill bit depth measurement, adjust positioning block for fast positioning and repeat positioning.
Standard drill bit angle reference, reference angle after back grinding of the drill bit.
Table saw blade height and flip tool height can be measured.
With metric and inch units, which are easy to use.